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File:Toluene with sodium-benzophenone - brown.jpg

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English: Reaction not complete. Refluxing toluene with sodium desiccant and benzophenone indicator/oxygen scavenger. Taken 4 Sep 2006.

Keywords: reflux, toluene, sodium, benzophenone, distillation, desiccation

  • A bottle of benzophenone by Lancaster.
    A bottle of benzophenone by Lancaster.
  • ]] and benzophenone to produce dry, oxygen-free toluene.
    ]] and benzophenone to produce dry, oxygen-free toluene.
  • The mixture is still not blue yet indicating that the reaction is not complete.
    The mixture is still not blue yet indicating that the reaction is not complete.
  • The intense blue coloration due to the benzophenone ketyl radical shows that the toluene is considered free of air and moisture.
    The intense blue coloration due to the benzophenone ketyl radical shows that the toluene is considered free of air and moisture.
  • After the toluene has been thoroughly dried by the sodium and benzophenone, it is distilled at atmospheric pressure under a slight positive pressure of nitrogen to prevent contamination by air into the receiving Schlenk flask.
    After the toluene has been thoroughly dried by the sodium and benzophenone, it is distilled at atmospheric pressure under a slight positive pressure of nitrogen to prevent contamination by air into the receiving Schlenk flask.
日期 2006年9月4日 (原始上传日期)
来源 Transferred from en.wikipedia to Commons by Liftarn using CommonsHelper.
作者 英语维基百科的Rifleman 82

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  • 2006-09-04 18:05 Rifleman 82 1600×1200× (352717 bytes) Reaction not complete. Refluxing toluene with [[sodium]] desiccant and [[benzophenone]] indicator/oxygen scavenger. Taken 4 Sep 2006.

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